
<template>
  <div>
    <div class="shopcart">
      <div class="content">
           <!-- @click='toggleShow' -->
        <div class="content-left"      @click='toggleShow'>
           

             <!-- :class="{highlight: totalCount}" -->
          <div class="logo-wrapper">
            <div class="logo" 
            :class="{highlight: totalCount}" 
          
            >
       

        <!-- :class="{highlight:totalCount}" -->
              <i class="iconfont icon-shopping_cart"  
              :class="{highlight:totalCount}"
              
               ></i>
            </div>

            <!-- v-if='totalCount' -->
            <!-- {{totalCount}} -->
            <div class="num"   v-if='totalCount'>{{totalCount}}</div>
          </div>

          <!-- {{totalPrice}} -->
          <div class="price highlight" >￥{{totalPrice}}</div>

          
          <div class="desc">另需配送费￥{{info.deliveryPrice}}元</div>
          
        </div>
        <div class="content-right">
          
           <!-- {{payText}} -->
           <!--:class="payClass"  -->
           <!-- 计算属性 -->
          <div class="pay"   :class="payClass" >  
        {{payText}} 
           
          </div>
        </div>
      </div>
      <transition name="move">
          <!-- v-show="listShow"  -->
        <div class="shopcart-list"    v-show='listShow'>
          <div class="list-header">
            <h1 class="title">购物车</h1>
            <span class="empty" @click="clearCart">清空</span>
          </div>
          <div class="list-content">
            <ul>
              <li class="food" v-for="(food, index) in shopCart" :key="index">
                <span class="name">{{food.name}}</span>
                <div class="price"><span>￥{{food.price}}</span></div>
                <div class="cartcontrol-wrapper">
                  <CartControl :food="food"/>
                </div>
              </li>
            </ul>
          </div>
        </div>
      </transition>

    </div>
     <!-- v-show="listShow"   -->
    <div class="list-mask"   v-show="listShow"
    @click="toggleShow"></div>
  </div>
</template>
<script>

import  {mapGetters,mapState} from 'vuex'
import  CartControl from '../CartControl/CartControl'


import BScroll from 'better-scroll'

export default {
    components:{
        CartControl
    },
  name: '',
  data () {
    return {

        // listShow:false,
        isShow:false,
      
      
    }
  },
  methods: {
  clearCart(){
    //弹框提示是否真的需要清空购物车
    let flag= window.confirm('是否真的需要清空购物车')
    if(flag) {
       this.$store.dispatch('clearCart')
      //  this.$store.commit()
    }
   
  },

     // 显示与隐藏
toggleShow() {
  

  this.isShow=!this.isShow  
  
  
}



  },


  computed:{
      ...mapGetters(['totalCount','totalPrice']),
      ...mapState(['shopCart','info']),
      
      //是否高亮 如果总价格>起送的价格那么就高亮 否则不高亮
      payClass(){
          let     { totalPrice ,info}=this
          let      startPrice=info.minPrice
        return   totalPrice>=startPrice?  'enough':'not-enough'
        
        

      },

      payText() {
         let {totalPrice,totalCount,info}=this
         //分析 三种情况 
         /**
          * 1   没有数量 
          * 2   总价小于最小起送价格
          * 3   总价大于最小起送价格
          * 
          * 
          */
            if(totalCount==0) {
              this.isShow=false


                return   '未选购商品'
            }

            if(totalPrice<info.minPrice) {
               return   `还剩${info.minPrice-totalPrice}钱起送`
            }else {
               return '结算'
            }


      },

      listShow() {
        
        if(this.totalCount==0) {
            this.isShow=false
             return  false
        }



          if(this.isShow) {
                
                    this.$nextTick(()=>{
                      //单例模式

                      if(!this.list) {
                        this.list=  new  BScroll('.list-content',{
                            click:true

                          })
                      }else {
                        this.list.refresh()
                      }
                      
                  
                    })

              }

      





              return  this.isShow
      }
   
     
  }
}
</script>


<style lang="stylus" rel="stylesheet/stylus" scoped>
  @import "../../common/stylus/mixins.styl"

  .shopcart
    position fixed
    left 0
    bottom 0
    z-index 50
    width 100%
    height 48px
    .content
      display flex
      background #141d27
      font-size 0
      color rgba(255, 255, 255, 0.4)
      .content-left
        flex 1
        .logo-wrapper
          display inline-block
          vertical-align top
          position relative
          top -10px
          margin 0 12px
          padding 6px
          width 56px
          height 56px
          box-sizing border-box
          border-radius 50%
          background #141d27
          .logo
            width 100%
            height 100%
            border-radius 50%
            text-align center
            background #2b343c
            &.highlight
              background $green
            .icon-shopping_cart
              line-height 44px
              font-size 24px
              color #80858a
              &.highlight
                color #fff
          .num
            position absolute
            top 0
            right 0
            width 24px
            height 16px
            line-height 16px
            text-align center
            border-radius 16px
            font-size 9px
            font-weight 700
            color #ffffff
            background rgb(240, 20, 20)
            box-shadow 0 4px 8px 0 rgba(0, 0, 0, 0.4)
        .price
          display inline-block
          vertical-align top
          margin-top 5px
          line-height 24px
          padding-right 12px
          box-sizing border-box
          font-size 16px
          font-weight 700
          color #fff
          &.highlight
            color #fff
        .desc
          display inline-block
          vertical-align bottom
          margin-bottom 15px
          margin-left -45px
          font-size 10px
      .content-right
        flex 0 0 105px
        width 105px
        .pay
          height 48px
          line-height 48px
          text-align center
          font-size 12px
          font-weight 700
          color #fff
          &.not-enough
            background #2b333b
          &.enough
            background #00b43c
            color #fff
    .ball-container
      .ball
        position fixed
        left 32px
        bottom 22px
        z-index 200
        transition all 0.4s cubic-bezier(0.49, -0.29, 0.75, 0.41)
        .inner
          width 16px
          height 16px
          border-radius 50%
          background $green
          transition all 0.4s linear
    .shopcart-list
      position absolute
      left 0
      top 0
      z-index -1
      width 100%
      transform translateY(-100%)
      &.move-enter-active, &.move-leave-active
        transition transform .3s
      &.move-enter, &.move-leave-to
        transform translateY(0)
      .list-header
        height 40px
        line-height 40px
        padding 0 18px
        background #f3f5f7
        border-bottom 1px solid rgba(7, 17, 27, 0.1)
        .title
          float left
          font-size 14px
          color rgb(7, 17, 27)
        .empty
          float right
          font-size 12px
          color rgb(0, 160, 220)

      .list-content
        padding 0 18px
        max-height 217px
        overflow hidden
        background #fff
        .food
          position relative
          padding 12px 0
          box-sizing border-box
          bottom-border-1px(rgba(7, 17, 27, 0.1))
          .name
            line-height 24px
            font-size 14px
            color rgb(7, 17, 27)
          .price
            position absolute
            right 90px
            bottom 12px
            line-height 24px
            font-size 14px
            font-weight 700
            color rgb(240, 20, 20)
          .cartcontrol-wrapper
            position absolute
            right 0
            bottom 6px

  .list-mask
    position fixed
    top 0
    left 0
    width 100%
    height 100%
    z-index 40
    backdrop-filter blur(10px)
    opacity 1
    background rgba(7, 17, 27, 0.6)
    &.fade-enter-active, &.fade-leave-active
      transition all 0.5s
    &.fade-enter, &.fade-leave-to
      opacity 0
      background rgba(7, 17, 27, 0)
</style>